Introduction to Logic

Description

contains his 1762 essay "On the False/Mistaken Subtlety of the Four Syllogistic Figures" (PDF pp. 86ff.), which C. S. Peirce, Essential Peirce vol. 2 ref:25.53 lambasts:

Another effect of the neglect of the logic of relations was that Kant imagined that all necessary reasoning was of the type of a syllogism in Barbara.15 Nothing could be more ridiculously in conflict with well-known facts. For had that been the case, any person with a good logical head would be able instantly to see whether a given conclusion followed from given premisses or not; and moreover the number of conclusions from a small number of premisses would be very moderate.

I first heard about Kant's essay in Gardeil, O.P., Introduction, Logique (3ᵉ éd.) p. 125 (PDF p. 118):

Contre Kant (La fausse subtilité des quatre figures du syllogisme démontrée) il faut maintenir que les trois figures authentiques du syllogisme constituent toutes des formes de raisonnement valables, répondant chacune à une démarche réelle et originale de la pensée.

[DeepL transl.:] In contrast to Kant (The False Subtlety of the Four Figures of the Syllogism Demonstrated), it must be maintained that the three authentic figures of the syllogism all constitute valid forms of reasoning, each corresponding to a genuine and original mode of thought.

This essential text by one of the founders of modern philosophy offers an accessible introduction to his views on logic, aesthetics, and morality. Written during the height of the Enlightenment, Immanuel Kant's Introduction to Logic is a clear and concise primer for his larger works Critique of Pure Reason and Groundwork for the Metaphysics of Morals. More accessible than his other books, it provides definitions of Kantian terms and a clear discussion of each of his philosophical pursuits. For more advanced Kantian scholars, this book can bring to light some of the enduring issues in Kant's repertoire; for the beginner, it can open up the philosophical ideas of one of the most influential thinkers on modern philosophy. This edition comprises two parts: "Kant's Introduction to Logic" and an essay titled "The Mistaken Subtilty of the Four Syllogistic Figures," in which Kant analyzes Aristotelian logic.